ULTRASONIC LOW-FREQUENCY CONVERTER Russian patent published in 2019 - IPC H04R17/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to ultrasonic metrology, particularly to electromechanical sound transducers. Ultrasonic low-frequency converter contains a housing, inside which there is a tread, two piezoelectric elements and a damper. Housing is equipped with upper and lower sealed covers, and in transducer housing there is an electroacoustic partition, separating damper and protector into two parts, note here that flat and curved ledges of specified length perpendicularly oriented to the base are made on the first and second parts of the tread. Projections have acoustic contact with the controlled article whereon the piezoelectric elements are fixed. Measuring module is based on microcontroller equipped with microprocessor core, connected by means of eight-bit system bus with FLASH-memory of programs, SRAM-data memory, multichannel analogue-to-digital converter and universal eight-bit bidirectional input-output ports.

EFFECT: expansion of the device functional capabilities.

4 cl, 5 dwg